CN114728303A - Coating equipment and coating method - Google Patents

Coating equipment and coating method Download PDF

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Publication number
CN114728303A
CN114728303A CN202280000441.4A CN202280000441A CN114728303A CN 114728303 A CN114728303 A CN 114728303A CN 202280000441 A CN202280000441 A CN 202280000441A CN 114728303 A CN114728303 A CN 114728303A
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China
Prior art keywords
slurry
piece
slit
die
coating
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Granted
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CN202280000441.4A
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Chinese (zh)
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CN114728303B (en
Inventor
李宁
陈贵山
柴进
刘铮
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Shenzhen Manst Technology Co Ltd
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Shenzhen Manst Technology Co Ltd
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Publication of CN114728303A publication Critical patent/CN114728303A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B05C5/0258—Coating heads with slot-shaped outlet flow controlled, e.g. by a valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1005—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0411—Methods of deposition of the material by extrusion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Coating Apparatus (AREA)

Abstract

The application discloses coating equipment and coating method, and the coating equipment includes: coating die head and thick liquids parameter detection spare. Wherein the coating die comprises: the first slit, the second slit, the first adjustment mechanism and the second adjustment mechanism. Through the setting of first adjustment mechanism and second adjustment mechanism, can realize the flow control of circulation thick liquids in first slit and the second slit, and detect the thick liquids parameter of coating through thick liquids parameter detection spare, and then feed back to first adjustment mechanism and second adjustment mechanism after carrying out the comparison to thick liquids parameter and default, carry out the regulation of the position of first regulating part and second regulating part, with this automatic adjustment who realizes the coating of double-deck die head, thereby the validity and the precision of debugging have been improved greatly, further improve coating efficiency.

Description

Coating equipment and coating method
Technical Field
The application relates to the technical field of battery pole piece coating, in particular to coating equipment and a coating method.
Background
The lithium ion battery has the advantages of high specific capacity, high working voltage, no environmental pollution, long cycle life, wide working temperature range and the like, is widely applied to electronic products such as mobile phones, notebook computers, digital cameras and the like and automobiles, and has higher and higher performance requirements on the lithium ion battery along with the high-speed development of science and technology and economy.
At present, a double-layer coating die head in the lithium battery industry is mainly in a manual adjusting mode, and the adjusting method has high requirements on skills of debugging personnel, so that the debugging effectiveness is poor and the efficiency is low.
Disclosure of Invention
Therefore, the technical problem that this application will solve lies in the debugging that leads to because the mode of manual regulation is adopted to current double-deck coating die head among the prior art is effectual, the inefficiency.
To this end, the present application provides a coating apparatus comprising:
a coating die, the coating die comprising:
the slurry feeding device comprises a first slit and a second slit, wherein the first slit is suitable for first slurry to flow through, the second slit is suitable for second slurry to flow through, and the first slit and the second slit are arranged at an included angle;
the first adjusting mechanism comprises a first driving piece and a first adjusting piece, and the driving end of the first driving piece is connected with the first adjusting piece;
the second adjusting mechanism comprises a second driving piece and a second adjusting piece, and the driving end of the second driving piece is connected with the second adjusting piece;
the slurry parameter detection piece is in communication connection with the first adjusting mechanism and the second adjusting mechanism and is used for detecting slurry information on the pole piece;
wherein the content of the first and second substances,
the slurry parameter detection piece detects slurry information of the first slurry coated on the pole piece by the first slit and forms a first slurry parameter, and the first adjusting mechanism adjusts the position of the first adjusting piece according to the first slurry parameter so as to adjust the flow of the first slurry flowing in the first slit; and/or
The slurry parameter detection piece detects slurry information of the second slurry coated on the pole piece through the second slit and forms a second slurry parameter, and the second adjusting mechanism adjusts the position of the second adjusting piece according to the second slurry parameter so as to adjust the flow of the second slurry flowing in the second slit.
Optionally, the coating apparatus described above, further comprising: the upper die and the middle die surround the first slit, and the lower die and the middle die surround the second slit;
the first adjusting mechanism is arranged on the upper die and/or the middle die, and the second adjusting mechanism is arranged on the lower die and/or the middle die.
Optionally, the coating apparatus described above, further comprising:
a first gasket disposed between the upper mold and the middle mold to surround the first slit together with the upper mold and the middle mold;
and a second gasket disposed between the middle mold and the lower mold to enclose the second slit together with the middle mold and the lower mold.
Optionally, in the coating apparatus, at the intersection of the first slit and the second slit, the upper die and the lower die together enclose a die lip adapted for outflow of the slurry;
the lower die comprises a deformation part and a base part, the deformation part is arranged close to one side of the die lip, and the base part is arranged far away from one side of the die lip;
the second driving piece is installed on the base, and the second adjusting piece is connected with the deformation part; the second adjusting piece is provided with a die lip adjusting state which drives the deformation portion to be close to or far away from the base portion under the action of the second driving piece, and the lower lip of the lower die is warped relative to the upper lip of the upper die under the die lip adjusting state.
Optionally, in the coating apparatus, the middle die includes a first feeding hole, one end of the first feeding hole is adapted to be connected to a first feeding system, and the other end of the first feeding hole is communicated with the first slit;
the lower die comprises a second feeding hole, one end of the second feeding hole is suitable for being connected with a second feeding system, and the other end of the second feeding hole is communicated with the second slit.
Optionally, in the coating apparatus, the slurry parameter detecting element is a thickness detecting element, and the thickness detecting element detects the thickness of the slurry of the pole piece;
and/or
The slurry parameter detection piece is an area density detection piece, and the area density detection piece detects the slurry area density of the pole piece.
Optionally, in the coating apparatus, any one of the adjusting mechanisms further includes a driving board, the driving board is in communication connection with the driving member, and the driving board is in communication connection with the slurry parameter detecting member;
the driving piece drives the adjusting piece to move under the driving of the driving plate so as to adjust the flow rate of the slurry in the slit.
Optionally, the coating apparatus further includes a bus socket disposed on at least one side of the adjusting mechanism, and the bus socket is communicatively connected to the driving board.
Optionally, the coating apparatus further includes a dispensing mechanism, including: the dispensing valve is mounted on the upper die, the first dispensing channel is arranged on the upper die, and the first dispensing channel is communicated with the first slit and the dispensing valve;
the dispensing mechanism further comprises a second dispensing channel, the second dispensing channel is arranged on the middle die, and the second dispensing channel is communicated with the first slit and the second slit.
A method of coating, comprising:
coating the electrode plate with second slurry;
the slurry parameter detection piece detects a second slurry parameter on the pole piece and forms a first detection result;
controlling the position of a second adjusting piece according to the first detection result so as to adjust a second slurry parameter on the pole piece;
stopping coating the second slurry on the pole piece, and coating the first slurry on the pole piece;
the slurry parameter detection piece detects a first slurry parameter on the pole piece and forms a second detection result;
and controlling the position of the first adjusting piece according to the second detection result so as to adjust the first slurry parameter on the pole piece.
Optionally, the coating method further includes:
intermittently stopping coating the first slurry on the pole piece;
and detecting the second slurry parameter of the pole piece, and forming a third detection result.
Optionally, the coating method adopts the coating equipment.
The technical scheme provided by the application has the following advantages:
the application provides a coating equipment, setting through first adjustment mechanism and second adjustment mechanism, can realize the flow control of circulation thick liquids in first slit and the second slit, and detect the thick liquids parameter of coating through thick liquids parameter detection spare, and then realize carrying out the comparison back to thick liquids parameter and default, and feed back to first adjustment mechanism and second adjustment mechanism, carry out the regulation of first regulating part and second regulating part, with this automatically regulated who realizes the coating of double-deck die head, thereby the validity of debugging has been improved greatly, further improve coating efficiency.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a coating apparatus provided in an embodiment of the present application;
fig. 2 is a schematic diagram of the structure of a coating die in a coating apparatus provided in an example of the present application;
FIG. 3 is a cross-sectional view of FIG. 2
FIG. 4 is a schematic structural view of a variant embodiment of a lower die in a coating apparatus provided in an example of the present application;
fig. 5 is a schematic view of a matching structure of a first driving plate, a first adjusting member and a first driving member in the coating apparatus provided in the embodiment of the present application;
fig. 6 is a schematic structural diagram of a dispensing mechanism in a coating apparatus provided in an embodiment of the present application;
FIG. 7 is a flow chart of a coating method provided in an embodiment of the present application;
description of reference numerals:
1-upper mould;
2-middle mold; 21-a first feed port;
3, lower die; 31-a second feed port; 32-a base; 33-a deformation;
4-a first adjustment mechanism; 41-a first driving member; 42-a first adjustment member; 43-a first drive plate;
5-a second adjustment mechanism; 51-a second drive member; 52-a second adjustment member;
6-slurry parameter detection piece;
71-a first slit; 72-a second slit;
81-pole piece; 82-lower layer coating; 83-upper coating;
91-dispensing valve; 92-a first dispensing channel; 93-second dispensing channel.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In addition, the technical features mentioned in the different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment provides a coating apparatus, as shown in fig. 1 to 6, including: a coating die head and a slurry parameter detection member 6. Wherein the coating die comprises: the device comprises an upper die 1, a middle die 2, a lower die 3, a first adjusting mechanism 4 and a second adjusting mechanism 5. Wherein, the upper die 1 and the middle die 2 form a first slit 71 suitable for the circulation of a first slurry, the lower die 3 and the middle die 2 form a second slit 72 suitable for the circulation of a second slurry, and the first slit 71 and the second slit 72 are arranged at an included angle; the first adjusting mechanism 4 is arranged on the upper die 1 and comprises a first driving part 41 and a first adjusting part 42, and the driving end of the first driving part 41 is connected with the first adjusting part 42; the second adjusting mechanism 5 is arranged on the lower die 3 and comprises a second driving piece 51 and a second adjusting piece 52, and the driving end of the second driving piece 51 is connected with the second adjusting piece 52; the slurry parameter detection piece 6 is in communication connection with the first adjusting mechanism 4 and the second adjusting mechanism 5, and is used for detecting slurry information on the pole piece 81.
Specifically, the slurry parameter detector 6 detects slurry information of the first slurry applied to the pole piece 81 through the first slit 71 to form a first slurry parameter, and the first adjusting mechanism 4 adjusts the position of the first adjusting member 42 according to the first slurry parameter to adjust the flow rate of the first slurry flowing through the first slit 71; the slurry parameter detecting member 6 also detects slurry information of the second slurry coated on the pole piece 81 by the second slit 72 and forms a second slurry parameter, and the second adjusting mechanism 5 adjusts the position of the second adjusting member 52 according to the second slurry parameter so as to adjust the flow rate of the second slurry flowing in the second slit 72.
The coating equipment that this embodiment provided, setting through first adjustment mechanism 4 and second adjustment mechanism 5, can realize the flow control of circulation thick liquids in first slit 71 and the second slit 72, and detect the thick liquids parameter of coating through thick liquids parameter detection piece 6, and then realize comparing the back to thick liquids parameter and default, and feed back to first adjustment mechanism 4 and second adjustment mechanism 5, carry out the regulation of first regulating part 42 and second regulating part 52, with this automatically regulated who realizes the coating of double-deck die head, thereby the validity of debugging has been improved greatly, further improve coating efficiency.
The coating apparatus provided in this embodiment further includes: a first shim and a second shim. The first gasket is arranged between the upper die 1 and the middle die 2, and the first gasket, the upper die 1 and the middle die 2 enclose a first slit 71; the second gasket is disposed between the middle mold 2 and the lower mold 3, and the second gasket, the middle mold 2 and the lower mold 3 together enclose the second slit 72.
In this embodiment, the first slit 71 is disposed horizontally, and the second slit 72 is disposed obliquely upward in the flow direction of the second slurry. For example, in the present embodiment, the first slit 71 extends in the horizontal direction, and the second slit 72 is disposed at an inclination angle of 30 degrees with respect to the first slit 71. Of course, in other alternative embodiments, the inclination angle of the second slit 72 can be selected to be equal to 45 degrees or 20 degrees.
In the coating apparatus provided in this embodiment, the first adjusting mechanism 4 further includes a first driving plate 43, the first driving plate 43 is in communication connection with the first driving element 41, and the first driving plate 43 is in communication connection with the slurry parameter detecting element 6; the first driving member 41 is driven by the first driving plate 43 to adjust the position of the first adjusting member 42 extending into the first slit 71, so as to adjust the flow rate of the first slurry in the first slit 71. Specifically, the first driving member 41 is one or more of a stepping motor, an ultrasonic motor, and a piezoelectric motor. In this embodiment, the first adjusting member 42 is a T-shaped block. The T-shaped block comprises a rod part and a cut-off part which is a rectangular block body, the cut-off part is arranged close to one side of the first slit 71, when the cut-off part extends into the first slit 71, cut-off of the first slurry in the circulation process can be realized, and then the flow of the first slurry is adjusted
In the coating apparatus provided in this embodiment, at the intersection of the first slit 71 and the second slit 72, the upper die 1 and the lower die 3 together enclose a die lip suitable for slurry to flow out; the lower die 3 comprises a deformation part 33 and a base part 32, wherein the deformation part 33 is arranged close to one side of the die lip, and the base part 32 is arranged far away from one side of the die lip; the second driving member 51 is mounted on the base 32, and the second adjusting member 52 is connected with the deformation portion 33; the second adjusting member 52 has a die lip adjusting state in which the second driving member 51 brings the deformation portion 33 closer to or away from the base portion 32, and in the die lip adjusting state, the lower lip of the lower die 3 is warped with respect to the upper lip of the upper die 1.
As a first implementation manner of the present embodiment, the second driving member 51 is one or more of a stepping motor, an ultrasonic motor, and a piezoelectric motor. The second regulating part is a connecting rod, one end of the connecting rod is connected with the output end of the motor, and the other end of the connecting rod is connected with the deformation part 33, so that the deformation of the deformation part is realized under the driving of the motor.
As a first embodiment of the present embodiment, the second adjusting member 52 includes a push rod and a pull rod, and the push rod moves the deformation portion away from the base portion in use, or the pull rod moves the deformation portion closer to the base portion. Specifically, the push rod is abutted against the side wall surface of the deformation part, and when the second driving piece drives the rigid screw to rotate, the push rod can push the deformation part to move, so that the distance between the base part 32 and the deformation part 33 can be adjusted, and the lower lip of the lower die 3 is slightly deformed; the pull rod is in threaded connection with the deformation portion, and when the second driving piece drives the pull rod to move, the pull rod can pull the deformation portion to move towards the direction close to the base portion.
In the coating apparatus provided in this embodiment, the second adjusting mechanism 5 further includes a second driving board, the second driving board is in communication connection with the second driving element 51, and the second driving board is in communication connection with the slurry parameter detecting element 6; the second driving member 51 adjusts the relative position between the base portion 32 and the deforming portion 33 to adjust the flow rate of the second slurry flowing out of the second slit 72, under the driving of the second driving plate.
In the coating apparatus provided in this embodiment, the middle mold 2 includes a first feeding hole 21, one end of the first feeding hole 21 is adapted to be connected to a first feeding system, and the other end of the first feeding hole 21 is communicated with the first slit 71; the lower mold 3 includes a second feed opening 31, one end of the second feed opening 31 is adapted to be connected to a second feeding system, and the other end of the second feed opening 31 communicates with the second slit 72. The second feed inlet 31 is arranged on the bottom surface of the lower die 3, and the second feed inlet 31 with the structure has the advantages of small cutting amount to the lower die 3, short production period and simple production process.
Of course, in other alternative embodiments, the second feed opening 31 may be disposed at the back side of the lower mold 3.
In the coating apparatus provided in this embodiment, the slurry parameter detecting element 6 is a thickness detecting element, and the thickness detecting element detects the thickness of the slurry of the pole piece 81; the thickness detection piece is a thickness detector, and particularly an alpha-ray or beta-ray NDC (non-dispersive copper-based) measurement probe can be selected, so that the mass per unit area can be measured, and the coating thickness can be obtained; as another embodiment of this embodiment, the slurry parameter detecting element 6 may also be an area density detecting element, the area density detecting element detects the area density of the slurry on the pole piece 81, and the area density detecting element may be a densimeter. Of course, the thickness detecting member and the density detecting member may be selected at the same time.
The coating equipment that this embodiment provided still includes the bus seat, and the bus seat sets up at adjustment mechanism's both ends, and bus seat and drive plate communication are connected. The inserted sheet cartridge at drive plate both ends is in the bus seat, and the setting of bus seat has realized providing the power and realizing communication connection for a plurality of drive plates and a plurality of adjustment mechanism for adjustment mechanism.
As shown in fig. 6, the coating apparatus provided in this embodiment further includes a dispensing mechanism, and the dispensing mechanism includes a dispensing valve 91 disposed on the upper die 1 and a first dispensing passage 92 disposed on the upper die. The first dispensing channel 92 is communicated with the dispensing valve 91, and the first dispensing channel 92 is communicated with the glue flowing channel on the first gasket, so that the upper layer dispensing is realized.
In other optional embodiments, in order to realize lower layer dispensing of the dispensing mechanism while satisfying upper layer dispensing, a communication hole may be further disposed on the first gasket, the dispensing mechanism further includes a second dispensing channel 93 disposed on the middle mold 2, the second dispensing channel is communicated with the first dispensing channel 92 through the communication hole, one side of the second dispensing channel 93, which is far away from the first gasket, is communicated with the dispensing channel on the second gasket, thereby realizing lower layer dispensing.
In other alternative embodiments, the setting positions of the first adjusting mechanism and the second adjusting mechanism may be changed, for example, the first adjusting mechanism may be disposed on the middle mold, and the second adjusting mechanism may also be disposed on the middle mold, as long as the first adjusting mechanism can change the flow rate of the first slurry in the first slit, and the second adjusting mechanism can change the flow rate of the second slurry in the second slit.
Example 2
The present embodiment provides a coating method, as shown in fig. 7, including the following steps:
s11: coating the pole piece 81 with a second slurry;
firstly, opening a control valve at the second feed port 31 side, and closing a control valve at the first feed port 21 side to coat a lower layer coating 82 on a pole piece 81;
s12: the slurry parameter detection part 6 detects a second slurry parameter on the pole piece 81 and forms a first detection result;
according to the detection data fed back by the thickness detection piece or the surface density detection piece, a second slurry parameter coated on the pole piece 81 is obtained, the second slurry parameter is compared with a preset process requirement to obtain a first detection result, and the second slurry parameter can be the actual film thickness detected by the thickness detection piece or the surface density parameter of the second slurry detected by the surface density detection piece.
S13: controlling the position of the second adjusting part 52 according to the first detection result to adjust the second slurry parameter on the pole piece 81;
the second driving element 51 is controlled by the second driving plate to drive the second adjusting element 52 to move, so that the relative position between the base 32 and the deformation part 33 of the lower die 3 is changed, the lower lip slightly deforms relative to the upper lip, the flow rate of the second slurry flowing out of the second slit 72 is adjusted, the surface density of the second slurry coated on the pole piece 81 and the film thickness of the lower coating 82 are further changed, and the adjustment of the parameters of the second slurry is realized.
S21: stopping coating the second slurry on the pole piece 81, and coating the first slurry on the pole piece 81;
when the second slurry parameter meets the preset process requirement, closing the control valve at the second feed port 31 side, and opening the control valve at the first feed port 21 side to coat the upper coating 83 on the pole piece 81;
s22: the slurry parameter detection part 6 detects a first slurry parameter on the pole piece 81 and forms a second detection result;
according to the detection data fed back by the thickness detection piece or the surface density detection piece, a first slurry parameter coated on the pole piece 81 is obtained, and the first slurry parameter is compared with a preset process requirement to obtain a second detection result, at this time, the first slurry parameter can be the sum of the film thickness of the lower coating 82 and the film thickness of the upper coating 83 detected by the thickness detection piece, and can also be the actual surface density parameter of the substrate coated with the first slurry detected by the surface density detection piece.
S23: and controlling the position of the first adjusting member 42 according to the second detection result to adjust the first slurry parameter on the pole piece 81.
The first driving member 41 is controlled by the first driving plate 43, so that the position of the first adjusting member 42 extending into the first slit 71 is adjusted, and the flow rate of the first slurry in the first slit 71 is adjusted, so that the areal density of the first slurry coated on the pole piece 81 and the film thickness of the lower coating 82 are changed, and the adjustment of the first slurry parameter is realized.
S31: intermittently stopping coating the first slurry on the pole piece 81;
in the continuous coating process, the control valve on the first feed port 21 side is periodically and intermittently closed;
s32: and detecting the second slurry parameter of the pole piece 81 and forming a third detection result.
Example 3
This example provides a coating method, and the specific coating method is the coating method provided in example 2, using the coating apparatus provided in example 1.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of this invention are intended to be covered by the present application.

Claims (12)

1. A coating apparatus, comprising:
a coating die, the coating die comprising:
the slurry feeding device comprises a first slit and a second slit, wherein the first slit is suitable for first slurry to flow through, the second slit is suitable for second slurry to flow through, and the first slit and the second slit are arranged at an included angle;
the first adjusting mechanism comprises a first driving piece and a first adjusting piece, and the driving end of the first driving piece is connected with the first adjusting piece;
the second adjusting mechanism comprises a second driving piece and a second adjusting piece, and the driving end of the second driving piece is connected with the second adjusting piece;
the slurry parameter detection piece is in communication connection with the first adjusting mechanism and the second adjusting mechanism and is used for detecting slurry information on the pole piece;
wherein the content of the first and second substances,
the slurry parameter detection piece detects slurry information of the first slurry coated on the pole piece through the first slit and forms a first slurry parameter, and the first adjusting mechanism adjusts the position of the first adjusting piece according to the first slurry parameter so as to adjust the flow of the first slurry flowing in the first slit; and/or
The slurry parameter detection piece detects slurry information of the second slurry coated on the pole piece through the second slit and forms a second slurry parameter, and the second adjusting mechanism adjusts the position of the second adjusting piece according to the second slurry parameter so as to adjust the flow of the second slurry flowing in the second slit.
2. Coating apparatus according to claim 1,
further comprising: the upper die and the middle die surround the first slit, and the lower die and the middle die surround the second slit;
the first adjusting mechanism is arranged on the upper die and/or the middle die, and the second adjusting mechanism is arranged on the lower die and/or the middle die.
3. Coating apparatus as claimed in claim 2,
further comprising:
a first gasket disposed between the upper mold and the middle mold to surround the first slit together with the upper mold and the middle mold;
and a second gasket disposed between the middle mold and the lower mold to enclose the second slit together with the middle mold and the lower mold.
4. Coating apparatus according to claim 2 or 3,
at the intersection of the first slit and the second slit, the upper die and the lower die jointly enclose a die lip suitable for slurry to flow out;
the lower die comprises a deformation part and a base part, the deformation part is arranged close to one side of the die lip, and the base part is arranged far away from one side of the die lip;
the second driving piece is installed on the base, and the second adjusting piece is connected with the deformation part; the second adjusting piece is provided with a die lip adjusting state which drives the deformation portion to be close to or far away from the base portion under the action of the second driving piece, and the lower lip of the lower die is warped relative to the upper lip of the upper die under the die lip adjusting state.
5. Coating apparatus according to claim 2 or 3,
the middle die comprises a first feed inlet, one end of the first feed inlet is suitable for being connected with a first feeding system, and the other end of the first feed inlet is communicated with the first slit;
the lower die comprises a second feeding hole, one end of the second feeding hole is suitable for being connected with a second feeding system, and the other end of the second feeding hole is communicated with the second slit.
6. Coating apparatus according to any one of claims 1-3,
the slurry parameter detection piece is a thickness detection piece, and the thickness detection piece detects the thickness of the slurry of the pole piece;
and/or
The slurry parameter detection piece is an area density detection piece, and the area density detection piece detects the slurry area density of the pole piece.
7. A coating apparatus as claimed in claim 6,
any one of the adjusting mechanisms further comprises a driving plate, the driving plate is in communication connection with a driving piece, and the driving plate is in communication connection with the slurry parameter detection piece;
the driving piece drives the adjusting piece to move under the driving of the driving plate so as to adjust the flow rate of the slurry in the slit.
8. A coating apparatus as claimed in claim 7,
still include the bus seat, set up in adjustment mechanism at least one side, the bus seat with drive plate communication connection.
9. Coating apparatus as claimed in claim 1,
still include some rubber coating machine construct, include: the dispensing valve is mounted on the upper die, the first dispensing channel is arranged on the upper die, and the first dispensing channel is communicated with the first slit and the dispensing valve;
the dispensing mechanism further comprises a second dispensing channel, the second dispensing channel is arranged on the middle die, and the second dispensing channel is communicated with the first slit and the second slit.
10. A coating method, comprising:
coating the electrode plate with second slurry;
the slurry parameter detection piece detects a second slurry parameter on the pole piece and forms a first detection result;
controlling the position of a second adjusting piece according to the first detection result so as to adjust a second slurry parameter on the pole piece;
stopping coating the second slurry on the pole piece, and coating the first slurry on the pole piece;
the slurry parameter detection piece detects a first slurry parameter on the pole piece and forms a second detection result;
and controlling the position of the first adjusting piece according to the second detection result so as to adjust the first slurry parameter on the pole piece.
11. The coating method according to claim 10, further comprising:
intermittently stopping coating the first slurry on the pole piece;
and detecting the second slurry parameters of the pole piece, and forming a third detection result.
12. Coating method according to claim 10 or 11, characterized in that a coating apparatus according to any one of claims 1-9 is used.
CN202280000441.4A 2022-02-24 2022-02-24 Coating equipment and coating method Active CN114728303B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115970987A (en) * 2023-02-15 2023-04-18 重庆太蓝新能源有限公司 Extrusion coating die head and coating machine
CN116748081A (en) * 2023-08-18 2023-09-15 宁德时代新能源科技股份有限公司 Coating system, coating quality detection method, apparatus, device, and medium

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07204561A (en) * 1994-01-19 1995-08-08 Mitsubishi Heavy Ind Ltd Coating device for slit nozzle
JP2000334359A (en) * 1999-05-26 2000-12-05 Sony Corp Coating method and apparatus therefor
JP2002282759A (en) * 2001-03-27 2002-10-02 Ishikawajima Harima Heavy Ind Co Ltd Apparatus for detecting quantity of coating liquid discharged from curtain coater head and apparatus for adjusting quantity of coating liquid discharged using the same
CN109225763A (en) * 2018-10-30 2019-01-18 深圳市曼恩斯特科技有限公司 Coating head, apparatus for coating and coating method
CN109550642A (en) * 2017-09-26 2019-04-02 东莞市雅康精密机械有限公司 The coating die head and coating machine of electrodes of lithium-ion batteries
CN208810447U (en) * 2018-07-26 2019-05-03 浙江精诚模具机械有限公司 A kind of coating die head with differential flow adjustment structure
CN209772575U (en) * 2018-12-05 2019-12-13 深圳市曼恩斯特科技有限公司 Slit coating head
KR20200114417A (en) * 2019-03-28 2020-10-07 주식회사 엘지화학 Dual Slot Die Coater
CN112007824A (en) * 2020-09-18 2020-12-01 宁德中能电子设备有限公司 Coating die head for coating battery pole piece and working method thereof
KR102239354B1 (en) * 2019-10-14 2021-04-13 황은보 Coating apparatus capable of adjusting and maintaining gap of die lip and coating system using the same
CN112871579A (en) * 2021-03-23 2021-06-01 深圳市曼恩斯特科技股份有限公司 Double-layer coating die head and coating machine
CN214320738U (en) * 2020-12-17 2021-10-01 宁德中能电子设备有限公司 Automatic coating device for battery pole piece

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5522025B2 (en) * 2010-12-27 2014-06-18 トヨタ自動車株式会社 Coating device, coating method, battery manufacturing method
CN109513570B (en) * 2018-10-30 2022-08-19 深圳市曼恩斯特科技股份有限公司 Coating head, coating device and coating method
CN110252593A (en) * 2019-06-17 2019-09-20 深圳市曼恩斯特科技有限公司 Coating machine and its coating method
EP4134169A4 (en) * 2020-08-03 2023-10-25 LG Energy Solution, Ltd. Multi-slot die coater
CN214390896U (en) * 2021-01-22 2021-10-15 宁德时代新能源科技股份有限公司 Coating system

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07204561A (en) * 1994-01-19 1995-08-08 Mitsubishi Heavy Ind Ltd Coating device for slit nozzle
JP2000334359A (en) * 1999-05-26 2000-12-05 Sony Corp Coating method and apparatus therefor
JP2002282759A (en) * 2001-03-27 2002-10-02 Ishikawajima Harima Heavy Ind Co Ltd Apparatus for detecting quantity of coating liquid discharged from curtain coater head and apparatus for adjusting quantity of coating liquid discharged using the same
CN109550642A (en) * 2017-09-26 2019-04-02 东莞市雅康精密机械有限公司 The coating die head and coating machine of electrodes of lithium-ion batteries
CN208810447U (en) * 2018-07-26 2019-05-03 浙江精诚模具机械有限公司 A kind of coating die head with differential flow adjustment structure
CN109225763A (en) * 2018-10-30 2019-01-18 深圳市曼恩斯特科技有限公司 Coating head, apparatus for coating and coating method
CN209772575U (en) * 2018-12-05 2019-12-13 深圳市曼恩斯特科技有限公司 Slit coating head
KR20200114417A (en) * 2019-03-28 2020-10-07 주식회사 엘지화학 Dual Slot Die Coater
KR102239354B1 (en) * 2019-10-14 2021-04-13 황은보 Coating apparatus capable of adjusting and maintaining gap of die lip and coating system using the same
CN112007824A (en) * 2020-09-18 2020-12-01 宁德中能电子设备有限公司 Coating die head for coating battery pole piece and working method thereof
CN214320738U (en) * 2020-12-17 2021-10-01 宁德中能电子设备有限公司 Automatic coating device for battery pole piece
CN112871579A (en) * 2021-03-23 2021-06-01 深圳市曼恩斯特科技股份有限公司 Double-layer coating die head and coating machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
巫湘坤;: "锂离子电池浆料狭缝式涂布初期流场模拟研究", 电源技术, no. 04, 20 April 2018 (2018-04-20), pages 33 - 36 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115970987A (en) * 2023-02-15 2023-04-18 重庆太蓝新能源有限公司 Extrusion coating die head and coating machine
CN115970987B (en) * 2023-02-15 2023-10-31 重庆太蓝新能源有限公司 Extrusion coating die head and coating machine
CN116748081A (en) * 2023-08-18 2023-09-15 宁德时代新能源科技股份有限公司 Coating system, coating quality detection method, apparatus, device, and medium
CN116748081B (en) * 2023-08-18 2024-01-12 宁德时代新能源科技股份有限公司 Coating system and method

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